.md-editor .btn-group {
    position: relative;
    display: inline-block;
    vertical-align: middle;
}

.md-editor .btn-default {
    color: inherit;
    background: #fff;
    border: 2px solid #e7eaec;
}

.md-editor .btn-sm {
    padding: 5px 10px;
    font-size: 12px;
    line-height: 1.5;
}

.md-editor .btn {
    position: relative;
    float: left;
    margin-bottom: 5px;
    border-radius: 3px;
}

.md-editor .btn-group>.btn:first-child {
    margin-left: 5px;
}